Wheel-turning device.



W. BUSHING.

WHEEL TURNING DEVICE.

ABPLIOATION FILED MAY 11, 1910.

Patented Aug. 15, 1911.

ATTORNEYS COLUMBIA PLANOBRAPH c0.,WASHINa'r0N, p. C.

WILLIAM CUSHING, OF CLAYSVILLE, PENNSYLVANIA.

WHEEL-TURNING DEVICE.

Specification of Letters Patent. Patented Aug, 15, 1911.

Application filed May 11, 1910. Serial No. 560,616.

To all whom it mar concern:

Be it known that I, VILLIAM CUsI-rING, a citizen of the United States,and a resident of Claysville, in the county of VVashington and State ofPennsylvania, have invented a new and Improved WVheel-Turning Device, ofwhich the following is a full, clear, and exact description.

The invention relates to turning, and has for an object to provide awheel turning device for turning flat or crown surfaces on theperipheries of wheels too large to be mounted on a lathe. For thepurpose mentioned use is made of a bed provided with a straight trackand a curved track, a tool carriage mounted to operate on the tracks,and means for operating the carriage over either of the tracks.

Reference is to be had to the accompanying drawings, constituting a partof this specification, in which similar characters of reference denotecorresponding parts in all the views and in which Figure 1 is a viewshowing my device turned on end and looking at the front face of thesame; Fig. 2 is a plan view with parts broken away to disclose thecarriages operating over the curved track; and Fig. 3 is an invertedplan view with parts broken away to disclose the carriages operatingover the straight track.

Referring more particularly to the figures, I provide a bed or frame 10having a removable plate 11. The inner surface of the plate 11 isprovided with a straight track 12 and the opposite plate 13 of the bed10 is provided with a curved track 1 1. A screw rod 15, havingoppositely turned threads 16 and a controlling wheel 17, is mounted toturn in the frame 10. Trunnions 18 are mounted to engage the screw rod15 and opcrate in slots 19 of similar carriages 20. The carriages 20have tracks 21 on both sides of the same,- one of the tracks 21 beingadapted to contact with the curved track 14 and the other track 21 beingadapted to contact with the straight track 12. Tools 22 are adapted tobe removably held on the carriages 20 by means of bolts 23, and it willbe understood that various kinds and shaped tools can be employed.

In the operation of my device, when it is desired to turn a crownsurface on a wheel, the wheel is first mounted on a suitable shafting.The device described is then placed in a convenient cutting positionwith the curved track 14: beneath the carriages 20 so that the saidcarriages will operate over the curved track. In order that the straighttrack 12 will not interfere with the operation of the carriages over thecurved track, the plate 11, having the straight track 12' thereon isreversed, as shown in Fig. 1, so that the flat surface of the plate 11will constitute one of the bearing sides for the carriages 20 while theyoperate over the straight track. Now, after the turning device iscorrectly alined' with the wheel to be crowned, the wheel is turned andthe operating wheel 17 is operated to feed the carriages 20 toward eachother. The tools 22 will engage the wheel and cut the peripheral surfaceof the same and as will be easily understood, the surface of the wheelwill be curved or crowned owing to the curvature of the track 14:. Thenit is desired to cut a flat surface on the wheel the plate 13 having thecurved track 14 thereon is reversed so that the fiat surface of theplate 13 will constitute a bearing side for the carriages 20 and theplate 11 is also reversed so that the straight track 12 will;

contact wit hthe carriages 20, that is, the carriages 20 will now beoperative over the straight track, and the resultant cut of the tools onthe carriages will produce a straight peripheral surface on the wheel.

It will be understood that any number of similar carriages can beemployed; and it will be further understood that although I have shown aparticular form of my device for the purpose of describing the same, the

scope of the invention is defined in the appended claims.

Having thus described my invention, I claim as new and desire to secureby Letters Patent:

1.'A device of the class described comprising a bed provided with acurved track, a plate provided with'a straight track and connected tothe bed with the said plate spaced from the curved track and constituting a bearing member, and carriages mounted to operate over the curvedtrack with the said plate acting as a bearing member for the carriages,the said plates being adapted to be reversed whereby the said carriagesmay operate in the said straight track, the said bed then acting as abearing member.

2. A device of the class described, comprising a bed provided with acurved track and constituting a bearing member, a plate provided with astraight track and connected to the bed with the bed spaced from thesaid straight track, and carriages mounted to operate over the straighttrack with the said bed acting as a bearing member for the carriages,the said plates being adapted to be reversed whereby the said carriagesmay operate in the said straight track, the said bed 7 then acting as abearing member.

3. A device of the class described comprising a bedprovided with acurved track, a plate provided with a straight track and connected tothe bed with the said plate spaced from the curved track andconstituting a bearing member a screw rod mounted on the said bed,trunnions on the screw rod, and slotted carriages disposed between thesaid bed and said plate to operate over the curved track with the saidplate acting as a bearing member, the said trunnions extending into theslots of the said carriages, the said plates being adapted to bereversed whereby the said carriages may operate in the said straighttrack, the said bed then acting as a bearing member.

4. A device of the class described comprising a bed provided with acurved track and constituting a bearing member, a plate provided with astraight track and connected to the bed, with the said bed spaced fromthe said straight track, a screw rod mounted on the said bed, trunnionson the screw rod, and slotted carriages disposed between the said bedand said plate to operate over the straight track with the said plateacting as ajbearing member, the said trunnions extending into the slotsof the said carriages, the said plates being adapted to be reversedwhereby the said carriages may operate in the said straight track, thesaid bed then acting as a bearing member.

5. A device of the character described, comprising a frame, a platesupported thereby and provided with a curved track, and further providedwith a guiding surface independent of said curved track, a second platesupported by said frame and provided with a straight track and with aguiding surface independent of said straight track, each of said platesbeing reversible relatively to said frame, a pair of carriages, eachprovided with a surface for engaging said curved track of saidfirst-mentioned plate, and with a surface for engaging said guidingsurface of said second-mentioned plate, said carriages being eachfurther provided with a surface for engaging said straight track of saidsecond-mentioned plate and by said frame and reversible relativelythereto, said second plate being provided upon one of its faces with astraight track and upon its opposite face with a guiding surfaceindependent of said straight track, a

carriage disposed between said plates and provided with a surface forengaging said curved track of said first-mentioned plate and withanother'surface for engaging said guiding surface of saidsecond-mentioned plate, said carriage being further provided with asurface for engaging said straight track of said second-mentioned plateand with an additional surface for engaging said guiding surface of saidfirst-mentioned plate, means for holding a tool upon said carriage, and"mechanism for moving said carriage relatively to said frame.

7. A device of the character described, comprising a frame, a platesupported thereby and provided with a curved track and with a flatbearing surface opposite said curved track, a second plate supportedbysaid frame and provided with a straight track and with a flat bearingsurface opposite said straight track, a carriage disposed between saidplates and provided with a surface for engaging said curved track andwith another surface for engaging said flat bear-' ing surface of saidfirst-mentioned plate,

said carriage being also provided with a sur face for engaging saidstraight track and with a surface for engaging said flat bearing surfaceof said second-mentioned plate, means for moving said carriage bodily inrelation to said frame, and means for mounting a tool upon saidcarriage.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses.

WILLIAM cusnmo. Witnesses J OHN S. DANLEY, GEORGE ALLIsoN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, I). G.

